<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div{
            width:30px;
            height:50px;
            border:1px solid red;
            word-wrap: break-word;
        }
        table{
            border-collapse:collapse;
            caption-side: top;
        }
    </style>
</head>
<body>
    <table>
        <tr><!--在没有thead tbody tfoot的情况下，默认tr的父元素是tbody-->
            <td></td>
            <td></td>
            <td></td>
            <td></td>
        </tr>
        <tr>
            <td></td>
            <td></td>
            <td></td>
            <td></td>
        </tr>
        <tr>
            <td></td>
            <td></td>
            <td></td>
            <td></td>
        </tr>
        <tr>
            <td></td>
            <td></td>
            <td></td>
            <td></td>
        </tr>
    </table>
    <div>hello!!!!!!!!!!!!!!!!!</div>
    <input type="text">
    <textarea name="" id="" cols="30" rows="10" wrap="off" name="test">
        <!--tesxt=hello--> 
        hello
    </textarea>
</body>
</html>